Issue: redirected to home page of forum

I have noticed sometimes that when I post a comment on someones blog, I get redirected to the forum's home page. It still posts the comment but I have to go back to the blog to make sure.

Also, while in someone's blog, if I try to click on a comment in their "recent comment" box, it will redirected me to the forum's homepage as well. It happens in both firefox and chrome for me. It doesn't happen in everyone's blogs for me though. I know it happens when I check out HEEDLESS' newest blog but her other ones will let me view comments from her other blogs.

This is the blog entry that it happens to me